Outstanding book + 4 cd in a truly deluxe edition sold to a very cheap price- Portraits polychromes are a series of books associated with multimedia documents presented on the Internet site of the GRM since 2001. In releasing this collection, their primary concern was to increase awareness of the electroacoustic repertoire and the reserves in the GRM archives. Pierre Shaeffer, Pierre Henry, Brian Kane, Réjean Beaucage, Marcus Erbe and Simon Grintsch, Martin Laliberté, Philippe Langlois, Jacques Perriault, Jean-Claude Risset, John Dack Rolf Inge God¿y, Jacqueline Schaeffer, Evelyne Gayou, François Bayle, Claude Guisard, Francis Coupigny, François Delalande, Beatriz Ferreyra, Roger Cochini, Nicolas Frize, Jean-Michel Jarre, Daniel Teruggi, Marie- Claire Schaeffer, Jocelyne Tournet.